5 Volt, Byte Alterable E2PROM The X28HC256KM-15 is a high-speed CMOS EEPROM manufactured by XICOR. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Memory Size:** 256Kb (32K x 8-bit)
- **Technology:** High-Speed CMOS
- **Access Time:** 15ns
- **Operating Voltage:** 5V ±10%
- **Operating Temperature Range:** Commercial (0°C to +70°C)
- **Package:** 28-pin PLCC (Plastic Leaded Chip Carrier)
- **Endurance:** 100,000 write cycles (minimum)
- **Data Retention:** 100 years (minimum)
- **Interface:** Parallel
### **Descriptions:**
- The X28HC256KM-15 is a high-performance Electrically Erasable Programmable Read-Only Memory (EEPROM) designed for fast read and write operations.
- It features a byte-write capability, allowing individual bytes to be written without requiring a full block erase.
- The device supports a simple microprocessor interface with no additional support circuitry needed.
### **Features:**
- **Fast Access Time:** 15ns read access time.
- **Low Power Consumption:** Active current of 30mA (typical), standby current of 100μA (typical).
- **Automatic Write Cycle:** Self-timed programming cycle with no external components required.
- **Hardware & Software Data Protection:** Includes write protection features to prevent accidental data corruption.
- **CMOS Technology:** Ensures high reliability and low power consumption.
- **Industry-Standard Pinout:** Compatible with other 256Kb EEPROMs.
This device is commonly used in applications requiring non-volatile memory storage with fast access times, such as embedded systems, industrial controls, and telecommunications equipment.
